ELECTRIC AND MAGNETIC FIELDS

Electric and Magnetic Fields



Electric and Magnetic Fields

Energy Stored Electric Field

The concept of Electricity power field was presented by Michael Faraday. The electrical field exists between two charges separated by a potential difference, in the identical way that the electrical field force acts between two charges. However, the electric field is a little bit different. Gravitational force depends on the masses of two bodies, whereas electric field force counts on the electric powered allegations of two bodies. While magnetism can only drag two masses simultaneously, the electric force can be an appealing or repulsive force (www.users.powernet.co.uk). If both allegations are of identical sign (e.g. both positive), there will be a repulsive force between the two. If the charges are converse, there will be an attractive force between the two bodies. The magnitude of the force varies inversely with the square of the expanse between the two bodies, and is also proportional to the merchandise of the unsigned magnitudes of the two charges.

The electric field (E) is derived in the same way from the equation (see right)

where:

(constant),

Q = electric force of one object (C),

q = electric force of the other object (C), and

d = expanse between the two things (m).

Although, electric powered area E is a little bit different from gravitational field g. Gravitational force depends on mass, while electric force does not count on mass. Rather than, electric powered force depends on allegations on both objects.

By rearranging the equation, we get:

Electric field (E) for Q:

Electric field for q:

Let's divide the electric force (F) by charge q: Therefore, the electric field tells us the force per unit charge.

Magnetic Field

The genuine continuity of magnetic fields lies in the flow of magnetic power density flux. Magnetic power density flux is developed in ...